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notsponge [240]
1 year ago
15

Expand and simplify (2x + 3) (x + 7)

Mathematics
1 answer:
RUDIKE [14]1 year ago
5 0

Answer:

2x^{2} +17x+21

Step-by-step explanation:

multiply the 2x by x and 7 and then multiply 3 by x and 7. you will get 2x^{2}+14x+3x+21. combine like terms so add 14x to 3x and thats the only like trerms in the equation. so 2x^2+17x+21

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Kevin drove 357 miles using 14 gallons of gas. At this rate, how many miles would he drive using 16 gallons of gas?​
Inessa [10]

Answer:

Kevin could drive 408 miles using 16 miles of gas.

Step-by-step explanation:

357 (1/14) = 25.5

25.5 (16) = 408

7 0
3 years ago
kenzie bought a shirt for $18. the next day she saw the shirt was selling for 24.60. what is the percent increase
Luba_88 [7]
You are trying to solve what percent of the difference between $26.60 and $18 is of $24.60, so:

$24.60 - $18 = $6.60

24.60x = $6.60
x = 6.60/24.60
x = 0.2683

So the percent increase is 26.83%
3 0
3 years ago
PLEASE HURRY
s2008m [1.1K]

Answer:

1.25p

Step-by-step explanation:

p = amount raised last year

amount raised this year = p +(25% of p)

=1 p+0.25p

=p(1+0.25)

=1.25p

8 0
3 years ago
Which number can each term of the equation be multiplied by to eliminate the fractions before solving
zhuklara [117]

Answer:

Answer D:  12

Step-by-step explanation:

Three distinct denominators are shown here:  4, 3 and 2.  The LCD is 12.

This corresponds to answer D.

4 0
3 years ago
Find the distance between<br> (-3,5) and (4,-2)
Westkost [7]

Answer:

7√2 or approx. 9.89949

Step-by-step explanation:

distance between two points is

d=√(∆x^2+∆y^2)

where...

d is distance

∆x is change in x value

and ∆y is change in y value

In this problem ∆x=(-3)-4=(-7)

∆y=5-(-2)=7

plugging in those values gives us

d=√((-7)^2+7^2)

Solving this expression gives us

d=√(49+49)=√98

After simplifying the radical we are left with 7√2 or about 9.89949.

3 0
3 years ago
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